Uppercuts

Muscles worked

You need

How to do it

1. Stand in a fighting stance with your guard up and sink into a slight crouch, dropping your rear shoulder.
2. Drive up through your legs and rotate your hips as you swing your fist upward in a tight arc, palm facing you, as if punching under an opponent's chin - then bring it straight back to guard and load the other side.
3. The power rides an elevator from the floor: legs first, hips second, and the fist just gets to take the credit.